/* * {
	margin: 0;
	padding: 0;
} */
body {
	padding: 20px;
	margin: 0 auto;
	background-color: #e2e2e2;
	max-width: 1024px;
	color: #797979;
}
.backbtn {
	position: fixed;
	right: 15px;
	bottom: 15px;
	width: 100px;
	height: 50px;
	text-align: center;
	line-height: 50px;
	background-color: orange;
	border-radius: 3px;
	color: white;
	z-index: 999;
	cursor: pointer;
}
.backbtn:hover {
	font-weight: bold;
}
h1,
h2,
h3,
h4 {
	padding: 5px 0;
}
h1,
h2 {
	border-bottom: 2px solid #797979;
}
h1 {
	text-align: center;
}
p {
	background-color: #797979;
	color: white;
	font-size: 20px;
	padding: 20px;
	border-radius: 5px;
	margin: 10px 0;
}
p a {
	display: block;
	color: white;
	font-size: 20px;
	text-decoration: none;
}
p a:hover {
	color: peru;
}
p span {
	font-weight: bold;
	color: orange;
}
.box {
	/* width: 100%; */
	display: flex;
	background-color: white;
	/* height: 400px; */
	margin-bottom: 55px;
}
.box-item {
	width: 200px;
	height: 200px;
	font-size: 100px;
	text-align: center;
	line-height: 200px;
	margin: 5px;
	color: white;
	background-color: #ffd200;
}

.box-item > span {
	font-size: 24px;
}
.box-tall {
	height: 400px;
}
.box-height {
	height: auto;
}
.inline-box {
	display: inline-flex;
}
.flex-row {
	flex-direction: row;
}
.flex-row2 {
	flex-direction: row-reverse;
}
.flex-column {
	flex-direction: column;
}
.flex-column2 {
	flex-direction: column-reverse;
}
.flex-nowrap {
	flex-wrap: nowrap;
}
.flex-wrap {
	flex-wrap: wrap;
}
.flex-wrap2 {
	flex-wrap: wrap-reverse;
}
.flex-flow {
	flex-flow: row-reverse wrap-reverse;
}
.flex-start {
	justify-content: flex-start;
}

.flex-end {
	justify-content: flex-end;
}
.flex-center {
	justify-content: center;
}
.flex-between {
	justify-content: space-between;
}
.flex-around {
	justify-content: space-around;
}
.align-stretch {
	align-items: stretch;
}
.align-start {
	align-items: flex-start;
}
.align-end {
	align-items: flex-end;
}
.align-center {
	align-items: center;
}
.align-baseline {
	align-items: baseline;
}
.align-baseline .box-item {
	text-decoration: underline;
}
.align-baseline .box-tall {
	font-size: 150px;
}
.modiy {
	align-items: stretch;
	height: 1000px;
}
.modiy .box-item {
	height: auto;
}
.modiy.stretch {
	align-content: stretch;
}
.modiy.center {
	align-content: center;
}
.flex-wrap.start {
	align-content: flex-start;
}
.flex-wrap.end {
	align-content: flex-end;
}
.flex-wrap.between {
	align-content: space-between;
}
.flex-wrap.around {
	align-content: space-around;
}

.order .box-item:nth-child(3) {
	order: -1;
}
.order .box-item:nth-child(2) {
	order: 0;
}
.order .box-item:nth-child(1),
.order .box-item:nth-child(4) {
	order: 1;
}
.grow .box-item:nth-child(2) {
	flex-grow: 1;
}
.grow .box-item:nth-child(3) {
	flex-grow: 2;
}
.shrink .box-item:nth-child(2) {
	flex-shrink: 0;
}
.basis .box-item:nth-child(2) {
	flex-basis: 400px;
}
.flex .box-item {
	flex: 1;
}
.flex-auto .box-item {
	flex: auto;
}
.flex-none .box-item {
	flex: none;
}
.bigbox {
	height: 600px;
}
.self-start {
	align-self: flex-start;
}
.self-end {
	align-self: flex-end;
}
.footer {
	background-color: slategray;
	padding: 15px;
	height: 50px;
	color: white;
	line-height: 50px;
	text-align: right;
}
.footer a {
	color: white;
	text-decoration: none;
}
